<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>闭包应用-定时器中的闭包</title>
</head>
<body>
  <ul class="nav">
    <li>榴莲</li>
    <li>臭豆腐</li>
    <li>鲱鱼罐头</li>
    <li>大猪蹄子</li>
  </ul>
  <script>
    // 闭包应用-3秒钟之后,打印所有li元素的内容
    var lis = document.querySelector('.nav').querySelectorAll('li')
    for (var i = 0; i < lis.length; i++) {
      (function (i) {
        setTimeout(function () {
          console.log(lis[i].innerHTML)
        }, 3000)
      })(i)
    }
  </script>
</body>
</html>